Treasury watchdog probes solar tax grant program

LOS ANGELES/WASHINGTON (Reuters) - The Treasury Department's inspector general is investigating a popular stimulus program that allowed rooftop solar panel projects to turn tax credits into cash grants, according to a regulatory filing.

The Treasury's internal watchdog is looking at how the department managed the program and is searching for "possible misrepresentations" about the fair market value of solar systems that received grants, one large installer of solar panels said in its filing with the U.S. Securities and Exchange Commission.